However, different lineages of M. tuberculosis may vary in host range, and EAI genotype strains may be adapted to human and animal hosts.
In P. sojae, at least 3 avirulence effectors may avoid resistance recognition in this manner., These studies highlight the potential for Phytophthora species to vary their host range and level of aggressiveness through endogenous silencing of effector genes, mediated by sRNAs.
This family is composed of three known genera (Flavivirus, Hepacivirus and Pestivirus) which vary in their host range, specificity and outcome of infection.
While many koinobionts show high degrees of specialization and host fidelity, idiobionts are usually generalists and can even vary in their host ranges even at the population level.
Currently, host range and pathogenicity vary with prion strain (28, 37 ).
The most striking difference among the first three sequenced Frankia genomes was their sizes, which varied from 5.43 Mbp for a narrow host range Casuarina strain (Frankia sp. strain CcI3) to 9.04 Mbp for a broad host range Elaeagnus strain (EAN1pec) [ 23].
Host range (i.e. specificity) varies from 1 to 6 in virus strains studied here, and 18 viruses out of 51 (35.3%) are strict specialists, infecting only 1 host strain.
However, the group's pan-genome contains over 16,000 coding sequences (CDSs), and individual strains in the species complex vary enormously with respect to both epidemiology and host range.
The contribution of individual proteins to host range restriction, however, likely varies, depending on the test system and the virus strains under investigation.
Recent food-web analyses indicate that host ranges vary widely within and among taxa and associations are shaped by host ecology and defenses.
However, "lifestyle" in this case does not simply mean "intracellular" or "host-associated" since many factors that vary among intracellular bacteria influence rates of genomic changes, such as host range size, transmission mode, infected cells and tissues within the body, the immune system of the host and not the least, the complexity of the bacterial community that infects a given niche.
